Residential Roof Framing Plan

Gable a gable roof has a ridge at the center and slopes in two directions.

Residential roof framing plan.

Such methods use a 4 foot design module which governs a 16 inch spacing of joists studs rafters and panel sheathing products. Here we have a wood framed gable roof. Similar prescriptive design aids and efficient framing practices can be found in cost effective home building. Intricate roofs have many parts that incorporate several of the basic roof designs such as a gable roof sitting atop a gambrel or variations of the gable valley roof design using one or a variety of different types of roof trusses also see our very detailed diagrams showing the different parts of a roof truss.

The first approach to achieving a strong durable struc ture involving economical use of materials is to follow a basic modular plan for layout and attachment of framing members. The provisions for prescriptive roof construction are found in chapter 8 of the irc and in section 2308 of the ibc. Common types of roofs and basic framing terms. Known as prescriptive framing.

The image below shows a cross section of our simple 12 x 13 house from the joist span tables section of this tutorial. Within limitations which include among others building size roof pitch and design loads the allowed span for conventional rafters can be selected from tables rather than designed through engineering calculations. An example of each is shown in figure 2 1. Deck exterior and interior load bearing walls beams girders posts and floor framing.

As you can see the initial plan for framing your roof needs to take into account several key variables such as the shape of the roof and any relevant community building codes. For high wind conditions prescriptive guidelines for design and construction may be found in the wood. The framing of a basic gable roof is based on a right angle triangle and the various roof framing components fit the triangle. Also different architectural styles will use the same type of roof.

Let s consider a basic gable wood roof framing design. And the line length measurement from the roof peak to the building wall is the hypotenuse. The size of the ridge board and hip and valley rafters. Types of roofs the most commonly used types of pitched roof construction are the gable the hip the intersecting and the shed or lean to.

More complex roof designs will need to account for this accordingly. Depending on how wide the home is you can divide the total length in feet by two to determine how many trusses will be needed. In buildings including residential structures framing systems typically consist of the roof structure that supports the roof. A design and construction handbook nahbrc 1994.

For most load bearing requirements a roof truss will need to be placed every two feet along the walls. Continuing on from part 3. The rise or height of the roof at its peak is the altitude of the triangle. Framing must transfer all gravity uplift and lateral loads to the foundation.

It is the form most commonly used by.